React复选框未初始获取对象的值

import React, { Component } from 'react';

class Checkbox extends Component {
  constructor(props) {
    super(props);
    this.state = {
      isChecked: false
    };
  }

  handleCheckboxChange = () => {
    this.setState(prevState => ({
      isChecked: !prevState.isChecked
    }));
  }

  render() {
    const { isChecked } = this.state;

    return (
      <div>
        <label>
          <input
            type="checkbox"
            checked={isChecked}
            onChange={this.handleCheckboxChange}
          />
          Checkbox
        </label>
      </div>
    );
  }
}

export default Checkbox;